Motoblocks of the Neva brand have earned their popularity among owners of small land holdings - personal plots in dachas and small farms. The walk-behind tractor serves as a faithful assistant when performing many different works on a plot of land. However, if the unit is used actively, sooner or later it will need to replace the engine.
At the same time, it is not at all necessary to use spare parts exclusively of the “native” brand - other engines are also suitable for Neva walk-behind tractors, from which you can choose the desired power. How to choose and operate the engine correctly for the Neva MB walk-behind tractor will be discussed in our article.
You can install different engines for this walk-behind tractor.
What kind of engine can be used
From the beginning of production, Neva walk-behind tractors were equipped with Russian engines. The engine for the Neva MB 2 walk-behind tractor was branded DM 1K and earned a reputation as a fairly reliable device. The only drawback of the DM 1K engine was its low operating life.
Today, installing an imported engine on a walk-behind tractor helps increase productivity. Installing them on the Neva is quite easy, they do not require special operating conditions or special maintenance and are quite durable. In addition, their cost is not much more expensive than Russian engines.
Important! Not any motor is suitable for replacing the engine on a Neva walk-behind tractor. Therefore, before replacing, it is important to study the appropriate brands of spare parts and choose the one that is optimally suited for the specific tasks of a country house or farm.
Among the many options for replacing an engine for a Neva walk-behind tractor, the most common are Robin-Subaru, Honda engines, as well as Chinese devices. Below we will look at both these and other options.
In this video you will learn how to install a new engine on a walk-behind tractor:
EJ205
Turbocharged petrol power unit. Installed on models for both domestic and foreign markets. The engine is equipped with four camshafts. This design allows for improved engine performance with low fuel consumption.
Engine characteristics
- The volume of working cylinders is 1994 cm3;
- The maximum power of the power plant is 225 horsepower;
- Number of working cylinders – 4;
- Cylinder diameter – 9.2 cm;
- Number of valves per cylinder – 4;
- Fuel consumption – 12 l;
- Resource – 220,000 km.
ATTENTION: In case of improper maintenance or violation of operating rules, the service life of the power unit is reduced.
Engine options
To decide which engine to install on the Neva walk-behind tractor, many are wisely guided by criteria such as:
- price-quality ratio;
- availability of repairs;
- compliance of technical characteristics with climatic conditions;
- as well as some other features.
It is important to understand that the device that is optimal in one case may not be suitable for another. Therefore, we will take a detailed look at what today’s market for components for walk-behind tractors offers farmers and summer residents.
Lifan
This Chinese manufacturer, which occupies a leading position among manufacturers in its country, creates fairly universal engines for walk-behind tractors, offering them at a fairly affordable price. Lifan engines with a power of 6.5 hp are quite in demand among Russian consumers. for walk-behind tractors and cultivators. One of the advantages of motors of this brand is the presence of a forced air cooling system on all single-cylinder devices.
This car has some nuances
Users who have replaced this spare part note that installation (engine installation) of the Lifan on the Neva walk-behind tractor requires some additional effort. In particular, the mounting hardware of the device is not the same as the original one, so a subframe is needed to install it. If you have a welding machine on your farm, you can make a subframe yourself.
If not, you can purchase a ready-made one in a store that cooperates with the manufacturer of these units. Another discrepancy is that the pulley for the walk-behind tractor also does not match: the diameter of its own shaft is 25 mm, but in the case of Lifan it can be 19-20 mm, as a result of which additional adjustment of the pulley of the walk-behind tractor is required.
Subaru
The Subaru engine is installed on the Neva walk-behind tractor quite often. In situations where too onerous repair of a walk-behind tractor engine is required or there is simply a desire to increase the performance of the unit, many owners pay attention to the advantages of the Subaru engine:
- Has high strength and durability. Metal components are used where analogues of other brands use plastic. Equipped with an improved air purification system. Instead of an ignition coil, electronic ignition is installed. Cast iron liners increase the service life of the motor.
- Very reliable. Equipped with special cooling channels in the block and head, which protects the motor from overheating even under high load conditions.
- The assembly is carried out in Japan, which ensures increased quality. In addition, production is automated, which not only gives high precision during assembly, but also allows you to keep the price affordable due to the huge number of parts produced.
- Economical oil consumption. The cylinders are located vertically, so the parts are lubricated evenly, which increases torque. Oil consumption is reduced due to the fact that the device is equipped with an annular oil intake design and excellent crankcase ventilation.
- Reduced noise production is achieved thanks to rigidly fixed components of the device.
- Quick start. The manufacturer managed to overcome starting resistance by using a large bobbin in the starter. Additionally, the operator's starting effort is made easier by automatic compression reduction.
- Environmental friendliness. The operation of Subaru engines fully complies with the requirements of European environmental standards, as well as Japanese exhaust gas standards.
In addition to the listed advantages, the design is also quite compact and, despite the high strength of the structures, has a fairly low weight. Compactness is achieved, not least, thanks to the minimum distances between nodes, which became possible through the use of modern materials. Motors with a capacity of 7 horsepower are in high demand.
Patriot
If a breakdown occurs with the unit’s own motor, you can repair the Neva walk-behind tractor with your own hands, for example, by replacing the faulty engine with a “Patriot”. From the name it is clear that this device is domestically produced, the operating instructions and technical specifications are described in Russian quite easily, and the engine itself (in particular, the Patriot MBP-7.0/900 model) is quite universal and, according to practicing users, is well suited for Not you. One of its advantages is the availability of spare parts and characteristics developed for Russian weather conditions. According to user reviews, when processing large vegetable gardens and small farms with a full load, the motor is quite reliable and rarely breaks down.
The Patriot is a practical engine
Honda
Another Japanese brand also has many fans in Russia among land owners due to many advantages:
- The power of Honda engines ranges from 1.5 to 12 hp.
- High performance.
- Equipped with a spray lubrication system, which significantly increases engine life.
- Protected from overheating even under increased loads thanks to the forced cooling system.
- Equipped with automatic decompressors, which makes starting the engine much easier. Weather conditions do not affect the duration of the launch in any way.
- Fully comply with international environmental standards.
As we see, those who choose Honda engines also have many reasons to remain satisfied with their choice for many years.
Yamaha
These engines are not among the most common in Russia, but they have their undeniable advantages:
- Reduced vibration and noise levels due to the presence of a balancing system.
- Excellent traction characteristics (reach 122 kgf).
- Durability is ensured by highly reliable crankshafts, camshafts and balancer shafts with ball bearings on both sides, manufactured with high-frequency hardening.
- Double filtration.
- The service life of the motor ranges from 3 to 5 thousand hours.
Yamaha engines are distinguished by high power and performance, thanks to which they are excellent at cultivating soils of any complexity, including virgin soil.
This engine is powerful compared to analogues
Briggs stratton
Another imported brand is Briggs Stratton, a manufacturer of engines for motor cultivators and walk-behind tractors. Briggs Stratton are distinguished by high reliability and modern quality, thanks to the latest production technologies and strict quality control. They can be considered a new generation of general purpose engines, since many of the latest technologies are used in their production. These are four-stroke gasoline engines that use an inclined cylinder arrangement. The drive is overhead valve.
Users of Briggs stratton engines note their highest reliability and durability, thanks to which the use of walk-behind tractors virtually eliminates the occurrence of engine problems, breakdowns and other malfunctions. The main advantages of these motors:
- reliability;
- durability;
- high technology;
- ease of starting in any weather conditions;
- ease of use;
- High compatibility with walk-behind tractors and cultivators.
EJ255
Reliable Japanese-made engine with an aluminum cylinder block. Engine capacity 2.5 l. The maximum power rating is 230 horsepower. The installation runs on AI-95 - 98 gasoline.
REFERENCE: A distinctive feature of the EJ255 is its low fuel consumption. The average is 8.5 liters.
The model is available in an atmospheric version, or with an installed turbine. Versions with turbines have four camshafts and a variable exhaust gas distribution phase system. Depending on the turbine, power ratings differ.
Change of oil
Oil is poured into the crankcase, but it must not be mixed with gasoline. For the motor of a cultivator or walk-behind tractor, you need to choose four-stroke oil that meets the requirements of the GOST 10541-78 standard.
A dipstick is used to determine the oil level.
Important! When measuring the oil level, you should pay attention to the gap between the minimum and maximum depth marks - an oil trace should remain on this segment.
After unscrewing the plug, pay attention to the level - the oil should be in the neck thread area.
It is extremely important to correctly observe the frequency of oil changes. After installing a new engine, running-in is necessary, so the first oil change should be done after five hours of operation of the walk-behind tractor. Subsequent oil changes must be performed every 25 hours of operation. When the unit is actively loaded on the farm, owners, as a rule, replace it before the start of spring work.
Please note that it is necessary to constantly maintain the required oil level. It is important to monitor this, since the walk-behind tractor engine produces an average consumption of at least 1 g/h.
Important! The oil poured into the engine of the Neva walk-behind tractor must be of high quality. Using low-quality oil can lead to damage to the walk-behind tractor engine.
The technique for changing engine oil is quite simple:
- The walk-behind tractor is positioned vertically.
- A container with a capacity of at least 3 liters is installed under it.
- The breather is removed.
- The screw is unscrewed and the old oil is drained.
- The screw is tightened.
- The required amount of oil is poured in (checked with a dipstick, as described above).
- The breather closes.
- Engine operation is checked.
EJ253
Power plant made in Japan. The engine has a horizontal arrangement of working cylinders, the total volume of which is 2.5 liters.
Model characteristics:
- Maximum power – 173 horsepower;
- Average gasoline consumption – 9 liters;
- Unit weight – 120 kg;
- Compression -10;
- Working cylinder diameter – 9 9.5 -100;
- The piston stroke between dead centers is 7.9 cm;
- Motor resource – 250,000 km.
The model has been produced since 1999. In 2009, the manufacturer carried out modernization. The diameter of the working cylinders was increased, the weight of the exhaust manifold was reduced, an air flow sensor was installed, etc.
Changing the oil in a Subaru engine
Since Subaru is one of the most common engines that owners use to replace the previous engines of Neva walk-behind tractors, we will consider separately what requirements the Subaru manufacturer imposes on the characteristics of motor oils.
The oil recommended by the manufacturer is SAE 10W-30 - for summer in temperate climates and SAE 5W-30 - in cold regions, as well as in winter. The manufacturer's recommended operating class is SE or higher (optimally SG, SH, SJ). Therefore, if you have a Neva walk-behind tractor with a Subaru engine, it is important to take these requirements into account.
Engine repair
If there is a problem with the engine, repairs may require the use of spare parts. In addition, it is necessary to take into account the features of the motor installed on the unit. It is important to consider that, if desired, almost any repair can be done with your own hands if the necessary components are available, especially when it comes to minor breakdowns.
In case of serious malfunctions, it is best to contact a service center to repair this equipment.
And, as already mentioned, if the quality and reliability of the existing engine is no longer satisfactory, you can always make a replacement. This is interesting: choosing an engine for a Cascade walk-behind tractor.
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Engine replacement
To remove the motor, follow these steps:
- Place the walk-behind tractor on a flat surface and remove dirt.
- Remove the protective shield.
- Disconnect the accelerator cable from the carburetor plate.
- Loosen the bolts securing the attachment bracket.
- Loosen the drive belt pins.
- Remove the 4 screws securing the motor.
- Turn the engine to the left.
- Remove the belt from the crankshaft pulley.
- Disconnect the engine.
After the old engine is removed, the new one is installed in the reverse order. In this case, it is very important to meet two conditions:
- correct transmission of torque from the engine to the transmission;
- precise connection of the engine to the gearbox (or unit frame).
Motor EZ30
Six-cylinder power plant made in Japan. The total volume of the working cylinders is 3 liters. The engine has high power ratings - 250 hp. thanks to which it is installed on heavy Subaru cars. The model has a large resource. It is 300 thousand kilometers.
In 2003, the manufacturer upgraded the basic version, and based on it the EZ30D was released. The manufacturer installed new intake and exhaust manifolds made of plastic. The gas distribution mechanism drive is chain. The timing valves were equipped with a system for changing the phase distribution of air mass and exhaust gases.
From the above it follows that the manufacturer has produced a large number of power plant models designed for Subaru cars. Versions are available with different numbers of working cylinders. Released versions are systematically upgraded. This allows you to improve their technical characteristics. The power plants are distinguished by their build quality and unpretentiousness to operating conditions. The manufacturer produces single-cylinder engines used for installation in agricultural and industrial equipment.
